Table 2 Performance comparison of the radiomic and combined models

 < 3 weeks vs ≥ 3 weeks

 Radiomic model

T

0.900 (0.875–0.925)

Reference

0.857 (0.763–0.908)

0.855 (0.763–0.919)

I-T

0.854 (0.804–0.903)

0.812 (0.74–0.924)

0.798 (0.663–0.876)

 Combined model

T

0.915 (0.894–0.937)

0.009

0.851 (0.759–0.923)

0.838 (0.744–0.923)

I-T

0.897 (0.857–0.938)

 < 0.001

0.820 (0.729–0.903)

0.888 (0.775–0.995)

3–12 weeks vs > 12 weeks

 Radiomic model

T

0.837 (0.805–0.868)

Reference

0.729 (0.593–0.825)

0.855 (0.763–0.919)

I-T

0.793 (0.738–0.847)

0.816 (0.740–0.931)

0.798 (0.663–0.876)

 Combined model

T

0.848 (0.818–0.878)

0.12

0.732 (0.650–0.800)

0.836 (0.775–0.899)

I-T

0.818 (0.767–0.869)

0.003

0.718 (0.597– 0.879)

0.821 (0.628–0.910)